New API cleanup.

src/twc-utils.c

@@ -183,3 +183,36 @@ twc_hash_tox_id(const uint8_t *tox_id)
     return hash;
 }
 
+/**
+ * Read an entire file into memory.
+ *
+ * @return TWC_RC_OK on success, TWC_RC_ERROR if file can not be opened, and
+ *         TWC_RC_ERROR_MALLOC if an appropriate buffer can not be allocated.
+ */
+enum t_twc_rc
+twc_read_file(const char *path, uint8_t **data, size_t *size)
+{
+    FILE *file;
+    if (file = fopen(path, "r"))
+    {
+        // get file size
+        fseek(file, 0, SEEK_END);
+        *size = ftell(file);
+        rewind(file);
+
+        if (data = malloc(sizeof(*data) * *size))
+        {
+            fread(data, sizeof(uint8_t), *size, file);
+            fclose(file);
+            return TWC_RC_OK;
+        }
+        else
+        {
+            fclose(file);
+            return TWC_RC_ERROR_MALLOC;
+        }
+    }
+
+    return TWC_RC_ERROR;
+}
+